add error string when widget not rendered

This prevents the cryptic ruby raw string being printed if no rendering
template were found.

Closes: #307

1 files changed, 8 insertions, 0 deletions

diff --git a/test/app_test.rb b/test/app_test.rb
index 4101e91..da889ff 100644
--- a/test/app_test.rb
+++ b/test/app_test.rb
@@ -137,6 +137,14 @@ class AppTest < Dashing::Test
     end
   end
 
+  def test_get_nonexistent_widget
+    with_generated_project do
+      get '/views/nowidget.html'
+      assert_equal 200, last_response.status
+      assert_equal last_response.body, 'Drats! Unable to find a widget file named: nowidget to render.'
+    end
+  end
+
   def with_generated_project
     source_path = File.expand_path('../../templates', __FILE__)